7217.20.30.00 - With a diameter of 1.5 mm or more and containing by weight less than 0.25 percent of carbon

This HTS category encompasses round wire made of iron or nonalloy steel that has been plated or coated with zinc. Specifically, it covers wire with a diameter of 1.5 millimeters or greater, and which contains less than 0.25 percent of carbon by weight. This specification ensures that the wire is of a relatively lower carbon content, often implying greater malleability and ductility compared to higher carbon steel wires.

The primary distinction of this category from its sibling, 7217.20.45 (Other), lies in the specific physical characteristics of the wire. While 7217.20.45 would cover zinc-plated or coated round wire that does not meet the diameter or carbon content criteria defined here, this particular heading is exclusively for round wire of 1.5 mm or more in diameter and with a low carbon content (under 0.25%). This level of detail allows for precise tariff application based on these key material and dimensional attributes.

As a leaf node, this category has no further subdivisions. Therefore, classification into 7217.20.30.00 is final once the wire meets the criteria of being round, plated or coated with zinc, having a diameter of 1.5 mm or more, and containing by weight less than 0.25 percent of carbon. Examples of such products might include certain types of fencing wire, structural tie wires, or industrial binding wires where these specific properties are required.